guibackground.cpp

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/* xoreos - A reimplementation of BioWare's Aurora engine
 *
 * xoreos is the legal property of its developers, whose names
 * can be found in the AUTHORS file distributed with this source
 * distribution.
 *
 * xoreos is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 3
 * of the License, or (at your option) any later version.
 *
 * xoreos is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with xoreos. If not, see <http://www.gnu.org/licenses/>.
 */

#include <cfloat>

#include "src/common/debug.h"
#include "src/common/util.h"
#include "src/common/ustring.h"

#include "src/aurora/resman.h"
#include "src/aurora/types.h"

#include "src/graphics/graphics.h"
#include "src/graphics/resolution.h"
#include "src/graphics/aurora/textureman.h"

#include "src/engines/jade/gui/guibackground.h"

namespace Engines {

namespace Jade {

GUIBackground::GUIBackground(const Common::UString &type, bool front) :
    Graphics::GUIElement(front ? Graphics::GUIElement::kGUIElementFront : Graphics::GUIElement::kGUIElementBack), _type(type) {

    _distance = FLT_MAX;

    _screenWidth = WindowMan.getWindowWidth();
    _screenHeight = WindowMan.getWindowHeight();

    update();
}

GUIBackground::~GUIBackground() {
    hide();
}

void GUIBackground::setType(const Common::UString &type) {
    _type = type;
}

void GUIBackground::calculateDistance() {
}

void GUIBackground::render(Graphics::RenderPass pass) {
    if (pass == Graphics::kRenderPassTransparent || !_render)
        return;

    TextureMan.set(_texture);

    glDisable(GL_DEPTH_TEST);
    glDepthMask(GL_FALSE);

    glMatrixMode(GL_PROJECTION);
    glPushMatrix();
    glLoadIdentity();
    glOrtho(0.0, _screenWidth, 0.0, _screenHeight, -1.0, 1.0);

    glMatrixMode(GL_MODELVIEW);
    glLoadIdentity();

    glPushMatrix();

    glBegin(GL_QUADS);
        glTexCoord2f(0.0, 0.0);
        glVertex2i(_vertexX1, _vertexY1);
        glTexCoord2f(1.0, 0.0);
        glVertex2i(_vertexX2, _vertexY1);
        glTexCoord2f(1.0, 1.0);
        glVertex2i(_vertexX2, _vertexY2);
        glTexCoord2f(0.0, 1.0);
        glVertex2i(_vertexX1, _vertexY2);
    glEnd();

    glPopMatrix();

    glMatrixMode(GL_PROJECTION);
    glPopMatrix();

    glMatrixMode(GL_MODELVIEW);

    glDepthMask(GL_TRUE);
    glEnable(GL_DEPTH_TEST);
}

void GUIBackground::update() {
    if (tryBackground(_screenWidth, _screenHeight)) {
        return;
    }

    for (size_t i = 0; i < ARRAYSIZE(Graphics::kResolutions); i++) {
        if (Graphics::kResolutions[i].width <= _screenWidth && Graphics::kResolutions[i].height <= _screenHeight) {
            if (tryBackground(Graphics::kResolutions[i].width, Graphics::kResolutions[i].height)) {
                return;
            }
        }
    }
}

bool GUIBackground::tryBackground(int width, int height) {
    Common::UString name = Common::UString::format("%ux%u%s", width, height, _type.c_str());
    if (ResMan.hasResource(name, Aurora::kResourceImage)) {
        _texture = TextureMan.get(name);

        _vertexX1 = (_screenWidth - width) / 2;
        _vertexX2 = _vertexX1 + width;
        _vertexY1 = (_screenHeight - height) / 2;
        _vertexY2 = _vertexY1 + height;

        _render = true;
        debugC(Common::kDebugEngineGraphics, 1, "found background %s", _texture.getName().c_str());
    } else {
        _render = false;
        debugC(Common::kDebugEngineGraphics, 1, "no background %s", name.c_str());
    }
    return _render;
}

void GUIBackground::notifyResized(int UNUSED(oldWidth), int UNUSED(oldHeight), int newWidth, int newHeight) {
    _screenHeight = newHeight;
    _screenWidth = newWidth;

    update();
}

} // End of namespace Jade

} // End of namespace Engines